Finding the Fourth Proportional to 12,382.88, 17,089.28 and 7,077.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,382.88 : 17,089.28 = 7,077.57 : x
2. Step 2: Convert to fraction form
   12,382.88/17,089.28 = 7,077.57/x
3. Step 3: Cross multiply
   12,382.88x = 17,089.28 × 7,077.57
4. Step 4: Simplify right side
   12,382.88x = 120,950,540.06
5. Step 5: Solve for x
   x = 120,950,540.06/12,382.88
6. Step 6: Final answer
   x = 9,767.57